Made in Japan. K18 product. This is an oval-shaped pendant top featuring natural alexandrite. Alexandrite, along with diamonds, is called the "king of gems." It is a gemstone far rarer than diamonds. It is a mysterious gemstone that changes color depending on the light it is exposed to, such as sunlight, fluorescent light, and incandescent light. Stamped with K18. Stone size: Approximately 3 x 4mm Material: K18 yellow gold, Alexandrite 0.15ct The bale has an inner diameter of approximately 3mm and is oval-shaped. 2